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- research-articleOctober 2024
KMCT: k-Means Clustering of Trajectories Efficiently in Location-Based Services
CIKM '24: Proceedings of the 33rd ACM International Conference on Information and Knowledge ManagementPages 1523–1532https://doi.org/10.1145/3627673.3679848With the widespread use of GPS devices and the advancement of location-based services, a vast amount of trajectory data has been collected and mined for various applications. Trajectory clustering, which categorizes trajectories into distinct groups, is ...
- research-articleOctober 2024
CLR2G: Cross modal Contrastive Learning on Radiology Report Generation
CIKM '24: Proceedings of the 33rd ACM International Conference on Information and Knowledge ManagementPages 2742–2752https://doi.org/10.1145/3627673.3679668The automatic generation of radiological imaging reports aims to produce accurate and coherent clinical descriptions based on X-ray images. This facilitates clinicians in completing the arduous task of report writing and advances clinical automation. The ...
- research-articleNovember 2024
WBSP: Addressing stragglers in distributed machine learning with worker-busy synchronous parallel
AbstractParameter server is widely used in distributed machine learning to accelerate training. However, the increasing heterogeneity of workers’ computing capabilities leads to the issue of stragglers, making parameter synchronization challenging. To ...
- research-articleJanuary 2025
Position: towards unified alignment between agents, humans, and environment
- Zonghan Yang,
- An Liu,
- Zijun Liu,
- Kaiming Liu,
- Fangzhou Xiong,
- Yile Wang,
- Zeyuan Yang,
- Qingyuan Hu,
- Xinrui Chen,
- Zhenhe Zhang,
- Fuwen Luo,
- Zhicheng Guo,
- Peng Li,
- Yang Liu
ICML'24: Proceedings of the 41st International Conference on Machine LearningArticle No.: 2321, Pages 56251–56275The rapid progress of foundation models has led to the prosperity of autonomous agents, which leverage the universal capabilities of foundation models to conduct reasoning, decision-making, and environmental interaction. However, the efficacy of agents ...
- research-articleJanuary 2025
Bounded and uniform energy-based out-of-distribution detection for graphs
ICML'24: Proceedings of the 41st International Conference on Machine LearningArticle No.: 2319, Pages 56216–56234Given the critical role of graphs in real-world applications and their high-security requirements, improving the ability of graph neural networks (GNNs) to detect out-of-distribution (OOD) data is an urgent research problem. The recent work GNNSAFE (Wu ...
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- ArticleOctober 2024
Segam: Secure and Efficient Group-by-Aggregation Queries across Multiple Private Database*
AbstractData sharing faces significant constraints with business competition intensifying and privacy regulations enacted. Secure collaborative analysis, particularly in group-by-aggregation queries, has gained significant attention as a way to perform ...
- ArticleOctober 2024
Efficient and Secure Skyline Query Over Horizontal Data Federation
AbstractSkyline is a primitive operation in multi-criteria decision applications and there is an increasing demand to support such operations over a data federation, where the entire dataset is separately held by multiple data providers (a.k.a., silos), ...
- ArticleOctober 2024
- research-articleSeptember 2024
Towards Effective Author Name Disambiguation by Hybrid Attention
Journal of Computer Science and Technology (JCST), Volume 39, Issue 4Pages 929–950https://doi.org/10.1007/s11390-023-2070-zAbstractAuthor name disambiguation (AND) is a central task in academic search, which has received more attention recently accompanied by the increase of authors and academic publications. To tackle the AND problem, existing studies have proposed various ...
- research-articleJune 2024
Crowdsourced bug report severity prediction based on text and image understanding via heterogeneous graph convolutional networks
Journal of Software: Evolution and Process (WSMR), Volume 36, Issue 11https://doi.org/10.1002/smr.2705AbstractIn the process of crowdsourced testing, massive bug reports are submitted. Among them, the severity level of the bug report is an important indicator for traigers of crowdsourced platforms to arrange the order of reports efficiently so that ...
SPHGCN‐S, a crowdsourced bug, reports severity prediction model that integrates text and screenshot information via a heterogeneous GCN. SPHGCN‐S enables the interaction between global vocabulary and document information by designing three weight ...
- research-articleJune 2024
A Stochastic Particle Variational Bayesian Inference Inspired Deep-Unfolding Network for Sensing Over Wireless Networks
IEEE Journal on Selected Areas in Communications (JSAC), Volume 42, Issue 10Pages 2832–2846https://doi.org/10.1109/JSAC.2024.3414626Future wireless networks are envisioned to provide ubiquitous sensing services, driving a substantial demand for multi-dimensional non-convex parameter estimation. This entails dealing with non-convex likelihood functions containing numerous local optima. ...
- research-articleJanuary 2025
Improving the robustness of knowledge-grounded dialogue via contrastive learning
AAAI'24/IAAI'24/EAAI'24: Proceedings of the Thirty-Eighth AAAI Conference on Artificial Intelligence and Thirty-Sixth Conference on Innovative Applications of Artificial Intelligence and Fourteenth Symposium on Educational Advances in Artificial IntelligenceArticle No.: 2133, Pages 19135–19143https://doi.org/10.1609/aaai.v38i17.29881Knowledge-grounded dialogue (KGD) learns to generate an informative response based on a given dialogue context and external knowledge (e.g., knowledge graphs; KGs). Recently, the emergence of large language models (LLMs) and pre-training techniques has ...
- research-articleJanuary 2024
A Two-Stage 2D Channel Extrapolation Scheme for TDD 5G NR Systems
IEEE Transactions on Wireless Communications (TWC), Volume 23, Issue 8_Part_1Pages 8497–8511https://doi.org/10.1109/TWC.2024.3351212Recently, channel extrapolation has been widely investigated in frequency-division duplex (FDD) massive multiple-input multiple-output (MIMO) systems. However, in time-division duplex (TDD) fifth generation (5G) new radio (NR) systems, the channel ...
- research-articleOctober 2024
Joint Visibility Region Detection and Channel Estimation for XL-MIMO Systems via Alternating MAP
IEEE Transactions on Signal Processing (TSP), Volume 72Pages 4827–4842https://doi.org/10.1109/TSP.2024.3479319We investigate a joint visibility region (VR) detection and channel estimation problem in extremely large-scale multiple-input-multiple-output (XL-MIMO) systems, where near-field propagation and spatial non-stationary effects exist. In this case, each ...
- research-articleSeptember 2024
Single-Loop Deep Actor-Critic for Constrained Reinforcement Learning With Provable Convergence
IEEE Transactions on Signal Processing (TSP), Volume 72Pages 4871–4887https://doi.org/10.1109/TSP.2024.3461963Deep actor-critic (DAC) algorithms, which combine actor-critic with deep neural network (DNN), have been among the most prevalent reinforcement learning algorithms for decision-making problems in simulated environments. However, the existing DAC ...
- research-articleAugust 2024
Bayesian Deep Learning via Expectation Maximization and Turbo Deep Approximate Message Passing
IEEE Transactions on Signal Processing (TSP), Volume 72Pages 3865–3878https://doi.org/10.1109/TSP.2024.3442858Efficient learning and model compression algorithm for deep neural network (DNN) is a key workhorse behind the rise of deep learning (DL). In this work, we propose a message passing-based Bayesian deep learning algorithm called EM-TDAMP to avoid the ...
- research-articleDecember 2023
Low-Complexity Two-Timescale Hybrid Precoding for mmWave Massive MIMO: A Group-and-Codebook Based Approach
IEEE Transactions on Wireless Communications (TWC), Volume 23, Issue 7Pages 7263–7277https://doi.org/10.1109/TWC.2023.3339161In this paper, we present a novel hybrid precoding scheme, named group-and-codebook based two-timescale hybrid precoding (GC-THP), for reducing complexity in millimeter wave massive MIMO systems. The scheme clusters users into groups based on their ...
- research-articleNovember 2023
Robust Multi-User Channel Tracking Scheme for 5G New Radio
IEEE Transactions on Wireless Communications (TWC), Volume 23, Issue 6Pages 5878–5894https://doi.org/10.1109/TWC.2023.3328784Recently, massive multiple input multiple output (MIMO) channel tracking in the fifth generation (5G) new radio (NR) systems has attracted intensive interest. By exploiting the dynamic sparsity of massive MIMO channels, it is possible to design a high-...
- research-articleOctober 2023
Visible Light Communication-Enabled Simultaneous Position and Orientation Detection for Harnessing Multipath Interference and Random Fading
IEEE Transactions on Intelligent Transportation Systems (ITS-TRANSACTIONS), Volume 25, Issue 2Pages 1938–1952https://doi.org/10.1109/TITS.2023.3324361We focus on visible light communication-based simultaneous position and orientation detection (SPAO) for user devices (UDs) using photodiodes, which is challenging due to scattering interference and small-scale fading. To address this challenge, a novel ...
- research-articleOctober 2023
Relation-Aware Diffusion Model for Controllable Poster Layout Generation
- Fengheng Li,
- An Liu,
- Wei Feng,
- Honghe Zhu,
- Yaoyu Li,
- Zheng Zhang,
- Jingjing Lv,
- Xin Zhu,
- Junjie Shen,
- Zhangang Lin,
- Jingping Shao
CIKM '23: Proceedings of the 32nd ACM International Conference on Information and Knowledge ManagementPages 1249–1258https://doi.org/10.1145/3583780.3615028Poster layout is a crucial aspect of poster design. Prior methods primarily focus on the correlation between visual content and graphic elements. However, a pleasant layout should also consider the relationship between visual and textual contents and the ...